Utf8 garbled solution [suitable for JSP applications deployed in Tomcat]

 

1. Java class: characterencodingfilter

 Import javax. servlet .*;

Import java. Io. ioexception;

 

Public class characterencodingfilter implements filter {

 

Private string encoding = "UTF-8 ";

Private Boolean forceencoding = true;

 

/**

* Set the encoding to use for requests. This encoding will be

* Passed into a servletrequest. setcharacterencoding call.

* <P> whether this encoding will override existing request

* Encodings depends on the "forceencoding" flag.

*/

Public void setencoding (string encoding ){

This. Encoding = encoding;

}

 

/**

* Set whether the encoding of this filter shocould override existing

* Request encodings. Default is "false", I. e. Do not modify Encoding

* If servletrequest. getcharacterencoding returns a non-null value.

*/

Public void setforceencoding (Boolean forceencoding ){

This. forceencoding = forceencoding;

}

 

Public void Init (filterconfig) throws servletexception {

This. Encoding = filterconfig. getinitparameter ("encoding ");

String force = filterconfig. getinitparameter ("forceencoding ");

This. forceencoding = (force = NULL) | Boolean. valueof (force). booleanvalue ();

}

 

Public void dofilter (servletrequest,

Servletresponse,

Filterchain) throws ioexception, servletexception {

If (this. forceencoding | servletrequest. getcharacterencoding () = NULL ){

Servletrequest. setcharacterencoding (this. Encoding );

}

Filterchain. dofilter (servletrequest, servletresponse );

}

 

Public void destroy (){

 

}

 

}

 

2. Add filters configurations to the Web. xml configuration file.

 <! -- Filters configurations -->

<Filter>

<Filter-Name> character_encoding </filter-Name>

<Filter-class>

Common. encoding. characterencodingfilter </filter-class>

<Init-param>

<Param-Name> encoding </param-Name>

<Param-value> UTF-8 </param-value>

</Init-param>

<Init-param>

<Param-Name> forceencoding </param-Name>

<Param-value> true </param-value>

</Init-param>

</Filter>

<Filter-mapping>

<Filter-Name> character_encoding </filter-Name>

<URL-pattern>/* </url-pattern>

</Filter-mapping>

 

3. The database is created in UTF-8 format
4. Right-click Project Properties in UTF-8 format
5. All page declarations as UTF-8
6. jdbc url is set to: UTF-8
JDBC: mysql: // localhost: 3306/databaseuse? Useunicode = true & characterencoding = UTF-8
7. Database driver select UTF-8 format
8. Tomcat encoding into UTF-8

Add uriencoding = "UTF-8" in server. xml"

<Connector Port = "8080" maxhttpheadersize = "8192" maxthreads = "150" minsparethreads = "25" maxsparethreads = "75" enablelookups = "false" redirectport = "8443" acceptcount =" 100 "connectiontimeout =" 20000 "disableuploadtimeout =" true "uriencoding =" UTF-8 "/>